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Archer Respiratory - notes needed during revision for nursing school exams

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Gas exchange The delivery of oxygen from the lungs to the bloodstream, and the elimination of carbon dioxide from the bloodstream to the lungs. Occurs in the alveoli through passive diffusion. Ter ... minology ● Ventilation ○ Air movement in and out of the lungs ● Oxygenation ○ Oxygen in the bloodstream ● Perfusion ○ Oxygen in the tissues What is Chronic Obstructive Pulmonary Disease? ● A group of lung diseases that block airüow and make it difûcult to breathe. ● Includes: ○ Emphysema ○ Chronic bronchitis ○ Asthma ● Damage is not reversible Categories ● Emphysema ○ Destruction of alveoli is due to chronic inüammation. There is decreased surface area of the alveoli for participation in gas exchange. ● Chronic Bronchitis ○ There is chronic inüammation with a productive cough and excessive sputum ● Asthma ○ A respiratory condition marked by spasms in the bronchi of the lungs, causing difûculty in breathing. There is chronic inüammation of bronchi and bronchioles, and excess mucus. [Show More]

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